Since when do manga or any story have to be focused on people? Lots of manga get overly technical on their subject matter and that's what I love about the medium. You don't see that in any other fiction out there.
It's too early to tell right now, but I'd say the MC would be somewhere between the incompetent Dan and stiff as a board Ryu. Maybe Ken or Ryo (Sakazaki from KoF).